Can I do a Return ...?

Alright, so I recently ordered online the Naked Palette. I've been so excited to get it and just got it in the mail today! I opened it up and and showed my boyfriend all the pretty colors. My boyfriend looked at it and noticed that someone had used it. It looks like someone took swatches of three colors, can I just bring it into a store to exchange? I know someone wouldn't contaminate it but you can never be too sure. =/